English

ethnoreligious

From ethno- + religious.

Ancient Greek ἔθνος ‘a company, later a people, nation’

Latin religiō ‘scrupulousness’

Latin religiōsus ‘religious’

Old French religious

Anglo-Norman religieus

Middle English religiouse

Today it means

adj Of or pertaining to ethnicity and religion, especially in groups for which the two are greatly intertwined.

Language periods are conventional ranges, not dates for this word.

Etymograph / ethnoreligious